drivers/phy/cadence/phy-cadence-sierra.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Cadence Sierra PHY Driver
 *
 * Based on the linux driver provided by Cadence
 *
 * Copyright (c) 2018 Cadence Design Systems
 * Author: Alan Douglas <adouglas@cadence.com>
 *
 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
 * Jean-Jacques Hiblot <jjhiblot@ti.com>
 *
 */
#include <common.h>
#include <clk.h>
#include <linux/clk-provider.h>
#include <generic-phy.h>
#include <reset.h>
#include <dm/device.h>
#include <dm/device-internal.h>
#include <dm/device_compat.h>
#include <dm/lists.h>
#include <dm/read.h>
#include <dm/uclass.h>
#include <dm/devres.h>
#include <linux/io.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/phy/phy-cadence.h>
#include <regmap.h>

/* PHY register offsets */
#define SIERRA_COMMON_CDB_OFFSET			0x0
#define SIERRA_MACRO_ID_REG				0x0
#define SIERRA_CMN_PLLLC_GEN_PREG			0x42
#define SIERRA_CMN_PLLLC_MODE_PREG			0x48
#define SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG		0x49
#define SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG		0x4A
#define SIERRA_CMN_PLLLC_LOCK_CNTSTART_PREG		0x4B
#define SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG		0x4F
#define SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG		0x50
#define SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG	0x62
#define SIERRA_CMN_REFRCV_PREG				0x98
#define SIERRA_CMN_REFRCV1_PREG				0xB8
#define SIERRA_CMN_PLLLC1_GEN_PREG			0xC2

#define SIERRA_LANE_CDB_OFFSET(ln, offset)	\
				(0x4000 + ((ln) * (0x800 >> (2 - (offset)))))

#define SIERRA_DET_STANDEC_A_PREG			0x000
#define SIERRA_DET_STANDEC_B_PREG			0x001
#define SIERRA_DET_STANDEC_C_PREG			0x002
#define SIERRA_DET_STANDEC_D_PREG			0x003
#define SIERRA_DET_STANDEC_E_PREG			0x004
#define SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG		0x008
#define SIERRA_PSM_A0IN_TMR_PREG			0x009
#define SIERRA_PSM_DIAG_PREG				0x015
#define SIERRA_PSC_TX_A0_PREG				0x028
#define SIERRA_PSC_TX_A1_PREG				0x029
#define SIERRA_PSC_TX_A2_PREG				0x02A
#define SIERRA_PSC_TX_A3_PREG				0x02B
#define SIERRA_PSC_RX_A0_PREG				0x030
#define SIERRA_PSC_RX_A1_PREG				0x031
#define SIERRA_PSC_RX_A2_PREG				0x032
#define SIERRA_PSC_RX_A3_PREG				0x033
#define SIERRA_PLLCTRL_SUBRATE_PREG			0x03A
#define SIERRA_PLLCTRL_GEN_D_PREG			0x03E
#define SIERRA_PLLCTRL_CPGAIN_MODE_PREG			0x03F
#define SIERRA_PLLCTRL_STATUS_PREG			0x044
#define SIERRA_CLKPATH_BIASTRIM_PREG			0x04B
#define SIERRA_DFE_BIASTRIM_PREG			0x04C
#define SIERRA_DRVCTRL_ATTEN_PREG			0x06A
#define SIERRA_CLKPATHCTRL_TMR_PREG			0x081
#define SIERRA_RX_CREQ_FLTR_A_MODE3_PREG		0x085
#define SIERRA_RX_CREQ_FLTR_A_MODE2_PREG		0x086
#define SIERRA_RX_CREQ_FLTR_A_MODE1_PREG		0x087
#define SIERRA_RX_CREQ_FLTR_A_MODE0_PREG		0x088
#define SIERRA_CREQ_CCLKDET_MODE01_PREG			0x08E
#define SIERRA_RX_CTLE_MAINTENANCE_PREG			0x091
#define SIERRA_CREQ_FSMCLK_SEL_PREG			0x092
#define SIERRA_CREQ_EQ_CTRL_PREG			0x093
#define SIERRA_CREQ_SPARE_PREG				0x096
#define SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG		0x097
#define SIERRA_CTLELUT_CTRL_PREG			0x098
#define SIERRA_DFE_ECMP_RATESEL_PREG			0x0C0
#define SIERRA_DFE_SMP_RATESEL_PREG			0x0C1
#define SIERRA_DEQ_PHALIGN_CTRL				0x0C4
#define SIERRA_DEQ_CONCUR_CTRL1_PREG			0x0C8
#define SIERRA_DEQ_CONCUR_CTRL2_PREG			0x0C9
#define SIERRA_DEQ_EPIPWR_CTRL2_PREG			0x0CD
#define SIERRA_DEQ_FAST_MAINT_CYCLES_PREG		0x0CE
#define SIERRA_DEQ_ERRCMP_CTRL_PREG			0x0D0
#define SIERRA_DEQ_OFFSET_CTRL_PREG			0x0D8
#define SIERRA_DEQ_GAIN_CTRL_PREG			0x0E0
#define SIERRA_DEQ_VGATUNE_CTRL_PREG			0x0E1
#define SIERRA_DEQ_GLUT0				0x0E8
#define SIERRA_DEQ_GLUT1				0x0E9
#define SIERRA_DEQ_GLUT2				0x0EA
#define SIERRA_DEQ_GLUT3				0x0EB
#define SIERRA_DEQ_GLUT4				0x0EC
#define SIERRA_DEQ_GLUT5				0x0ED
#define SIERRA_DEQ_GLUT6				0x0EE
#define SIERRA_DEQ_GLUT7				0x0EF
#define SIERRA_DEQ_GLUT8				0x0F0
#define SIERRA_DEQ_GLUT9				0x0F1
#define SIERRA_DEQ_GLUT10				0x0F2
#define SIERRA_DEQ_GLUT11				0x0F3
#define SIERRA_DEQ_GLUT12				0x0F4
#define SIERRA_DEQ_GLUT13				0x0F5
#define SIERRA_DEQ_GLUT14				0x0F6
#define SIERRA_DEQ_GLUT15				0x0F7
#define SIERRA_DEQ_GLUT16				0x0F8
#define SIERRA_DEQ_ALUT0				0x108
#define SIERRA_DEQ_ALUT1				0x109
#define SIERRA_DEQ_ALUT2				0x10A
#define SIERRA_DEQ_ALUT3				0x10B
#define SIERRA_DEQ_ALUT4				0x10C
#define SIERRA_DEQ_ALUT5				0x10D
#define SIERRA_DEQ_ALUT6				0x10E
#define SIERRA_DEQ_ALUT7				0x10F
#define SIERRA_DEQ_ALUT8				0x110
#define SIERRA_DEQ_ALUT9				0x111
#define SIERRA_DEQ_ALUT10				0x112
#define SIERRA_DEQ_ALUT11				0x113
#define SIERRA_DEQ_ALUT12				0x114
#define SIERRA_DEQ_ALUT13				0x115
#define SIERRA_DEQ_DFETAP_CTRL_PREG			0x128
#define SIERRA_DFE_EN_1010_IGNORE_PREG			0x134
#define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG		0x150
#define SIERRA_DEQ_TAU_CTRL2_PREG			0x151
#define SIERRA_DEQ_PICTRL_PREG				0x161
#define SIERRA_CPICAL_TMRVAL_MODE1_PREG			0x170
#define SIERRA_CPICAL_TMRVAL_MODE0_PREG			0x171
#define SIERRA_CPICAL_PICNT_MODE1_PREG			0x174
#define SIERRA_CPI_OUTBUF_RATESEL_PREG			0x17C
#define SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG		0x183
#define SIERRA_LFPSDET_SUPPORT_PREG			0x188
#define SIERRA_LFPSFILT_NS_PREG				0x18A
#define SIERRA_LFPSFILT_RD_PREG				0x18B
#define SIERRA_LFPSFILT_MP_PREG				0x18C
#define SIERRA_SIGDET_SUPPORT_PREG			0x190
#define SIERRA_SDFILT_H2L_A_PREG			0x191
#define SIERRA_SDFILT_L2H_PREG				0x193
#define SIERRA_RXBUFFER_CTLECTRL_PREG			0x19E
#define SIERRA_RXBUFFER_RCDFECTRL_PREG			0x19F
#define SIERRA_RXBUFFER_DFECTRL_PREG			0x1A0
#define SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG		0x14F
#define SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG		0x150

#define SIERRA_PHY_CONFIG_CTRL_OFFSET			0xc000
#define SIERRA_PHY_PLL_CFG				0xe

#define SIERRA_MACRO_ID					0x00007364
#define SIERRA_MAX_LANES				16
#define PLL_LOCK_TIME					100

#define CDNS_SIERRA_INPUT_CLOCKS			5
enum cdns_sierra_clock_input {
	PHY_CLK,
	CMN_REFCLK_DIG_DIV,
	CMN_REFCLK1_DIG_DIV,
	PLL0_REFCLK,
	PLL1_REFCLK,
};

#define SIERRA_NUM_CMN_PLLC				2
#define SIERRA_NUM_CMN_PLLC_PARENTS			2

static const struct reg_field macro_id_type =
				REG_FIELD(SIERRA_MACRO_ID_REG, 0, 15);
static const struct reg_field phy_pll_cfg_1 =
				REG_FIELD(SIERRA_PHY_PLL_CFG, 1, 1);
static const struct reg_field pllctrl_lock =
				REG_FIELD(SIERRA_PLLCTRL_STATUS_PREG, 0, 0);

static const char * const clk_names[] = {
	[CDNS_SIERRA_PLL_CMNLC] = "pll_cmnlc",
	[CDNS_SIERRA_PLL_CMNLC1] = "pll_cmnlc1",
};

enum cdns_sierra_cmn_plllc {
	CMN_PLLLC,
	CMN_PLLLC1,
};

struct cdns_sierra_pll_mux_reg_fields {
	struct reg_field	pfdclk_sel_preg;
	struct reg_field	plllc1en_field;
	struct reg_field	termen_field;
};

static const struct cdns_sierra_pll_mux_reg_fields cmn_plllc_pfdclk1_sel_preg[] = {
	[CMN_PLLLC] = {
		.pfdclk_sel_preg = REG_FIELD(SIERRA_CMN_PLLLC_GEN_PREG, 1, 1),
		.plllc1en_field = REG_FIELD(SIERRA_CMN_REFRCV1_PREG, 8, 8),
		.termen_field = REG_FIELD(SIERRA_CMN_REFRCV1_PREG, 0, 0),
	},
	[CMN_PLLLC1] = {
		.pfdclk_sel_preg = REG_FIELD(SIERRA_CMN_PLLLC1_GEN_PREG, 1, 1),
		.plllc1en_field = REG_FIELD(SIERRA_CMN_REFRCV_PREG, 8, 8),
		.termen_field = REG_FIELD(SIERRA_CMN_REFRCV_PREG, 0, 0),
	},
};

struct cdns_sierra_pll_mux {
	struct cdns_sierra_phy  *sp;
	struct clk              *clk;
	struct clk              *parent_clks[2];
	struct regmap_field     *pfdclk_sel_preg;
	struct regmap_field     *plllc1en_field;
	struct regmap_field     *termen_field;
};

#define reset_control_assert(rst) cdns_reset_assert(rst)
#define reset_control_deassert(rst) cdns_reset_deassert(rst)
#define reset_control reset_ctl

struct cdns_sierra_inst {
	u32 phy_type;
	u32 num_lanes;
	u32 mlane;
	struct reset_ctl_bulk *lnk_rst;
};

struct cdns_reg_pairs {
	u16 val;
	u32 off;
};

struct cdns_sierra_data {
		u32 id_value;
		u8 block_offset_shift;
		u8 reg_offset_shift;
		u32 pcie_cmn_regs;
		u32 pcie_ln_regs;
		u32 usb_cmn_regs;
		u32 usb_ln_regs;
		struct cdns_reg_pairs *pcie_cmn_vals;
		struct cdns_reg_pairs *pcie_ln_vals;
		struct cdns_reg_pairs *usb_cmn_vals;
		struct cdns_reg_pairs *usb_ln_vals;
};

struct cdns_sierra_phy {
	struct udevice *dev;
	void *base;
	size_t size;
	struct regmap *regmap;
	struct cdns_sierra_data *init_data;
	struct cdns_sierra_inst *phys[SIERRA_MAX_LANES];
	struct reset_control *phy_rst;
	struct regmap *regmap_lane_cdb[SIERRA_MAX_LANES];
	struct regmap *regmap_phy_config_ctrl;
	struct regmap *regmap_common_cdb;
	struct regmap_field *macro_id_type;
	struct regmap_field *phy_pll_cfg_1;
	struct regmap_field *pllctrl_lock[SIERRA_MAX_LANES];
	struct regmap_field *cmn_refrcv_refclk_plllc1en_preg[SIERRA_NUM_CMN_PLLC];
	struct regmap_field *cmn_refrcv_refclk_termen_preg[SIERRA_NUM_CMN_PLLC];
	struct regmap_field *cmn_plllc_pfdclk1_sel_preg[SIERRA_NUM_CMN_PLLC];
	struct clk *input_clks[CDNS_SIERRA_INPUT_CLOCKS];
	int nsubnodes;
	u32 num_lanes;
	bool autoconf;
};

static inline int cdns_reset_assert(struct reset_control *rst)
{
	if (rst)
		return reset_assert(rst);
	else
		return 0;
}

static inline int cdns_reset_deassert(struct reset_control *rst)
{
	if (rst)
		return reset_deassert(rst);
	else
		return 0;
}

static inline struct cdns_sierra_inst *phy_get_drvdata(struct phy *phy)
{
	struct cdns_sierra_phy *sp = dev_get_priv(phy->dev);
	int index;

	if (phy->id >= SIERRA_MAX_LANES)
		return NULL;

	for (index = 0; index < sp->nsubnodes; index++) {
		if (phy->id == sp->phys[index]->mlane)
			return sp->phys[index];
	}

	return NULL;
}

static int cdns_sierra_phy_init(struct phy *gphy)
{
	struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);
	struct cdns_sierra_phy *phy = dev_get_priv(gphy->dev);
	struct regmap *regmap = phy->regmap;
	int i, j;
	struct cdns_reg_pairs *cmn_vals, *ln_vals;
	u32 num_cmn_regs, num_ln_regs;

	/* Initialise the PHY registers, unless auto configured */
	if (phy->autoconf)
		return 0;

	clk_set_rate(phy->input_clks[CMN_REFCLK_DIG_DIV], 25000000);
	clk_set_rate(phy->input_clks[CMN_REFCLK1_DIG_DIV], 25000000);

	if (ins->phy_type == PHY_TYPE_PCIE) {
		num_cmn_regs = phy->init_data->pcie_cmn_regs;
		num_ln_regs = phy->init_data->pcie_ln_regs;
		cmn_vals = phy->init_data->pcie_cmn_vals;
		ln_vals = phy->init_data->pcie_ln_vals;
	} else if (ins->phy_type == PHY_TYPE_USB3) {
		num_cmn_regs = phy->init_data->usb_cmn_regs;
		num_ln_regs = phy->init_data->usb_ln_regs;
		cmn_vals = phy->init_data->usb_cmn_vals;
		ln_vals = phy->init_data->usb_ln_vals;
	} else {
		return -EINVAL;
	}

	regmap = phy->regmap_common_cdb;
	for (j = 0; j < num_cmn_regs ; j++)
		regmap_write(regmap, cmn_vals[j].off, cmn_vals[j].val);

	for (i = 0; i < ins->num_lanes; i++) {
		for (j = 0; j < num_ln_regs ; j++) {
			regmap = phy->regmap_lane_cdb[i + ins->mlane];
			regmap_write(regmap, ln_vals[j].off, ln_vals[j].val);
		}
	}

	return 0;
}

static int cdns_sierra_phy_on(struct phy *gphy)
{
	struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);
	struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev);
	struct udevice *dev = gphy->dev;
	u32 val;
	int ret;

	ret = reset_control_deassert(sp->phy_rst);
	if (ret) {
		dev_err(dev, "Failed to take the PHY out of reset\n");
		return ret;
	}

	/* Take the PHY lane group out of reset */
	ret = reset_deassert_bulk(ins->lnk_rst);
	if (ret) {
		dev_err(dev, "Failed to take the PHY lane out of reset\n");
		return ret;
	}

	ret = regmap_field_read_poll_timeout(sp->pllctrl_lock[ins->mlane],
					     val, val, 1000, PLL_LOCK_TIME);
	if (ret < 0)
		dev_err(dev, "PLL lock of lane failed\n");

	reset_control_assert(sp->phy_rst);
	reset_control_deassert(sp->phy_rst);

	return ret;
}

static int cdns_sierra_phy_off(struct phy *gphy)
{
	struct cdns_sierra_inst *ins = phy_get_drvdata(gphy);

	return reset_assert_bulk(ins->lnk_rst);
}

static int cdns_sierra_phy_reset(struct phy *gphy)
{
	struct cdns_sierra_phy *sp = dev_get_priv(gphy->dev);

	reset_control_assert(sp->phy_rst);
	reset_control_deassert(sp->phy_rst);
	return 0;
};

static const struct phy_ops ops = {
	.init		= cdns_sierra_phy_init,
	.power_on	= cdns_sierra_phy_on,
	.power_off	= cdns_sierra_phy_off,
	.reset		= cdns_sierra_phy_reset,
};

struct cdns_sierra_pll_mux_sel {
	enum cdns_sierra_cmn_plllc	mux_sel;
	u32				table[2];
	const char			*node_name;
	u32				num_parents;
	u32				parents[2];
};

static struct cdns_sierra_pll_mux_sel pll_clk_mux_sel[] = {
	{
		.num_parents = 2,
		.parents = { PLL0_REFCLK, PLL1_REFCLK },
		.mux_sel = CMN_PLLLC,
		.table = { 0, 1 },
		.node_name = "pll_cmnlc",
	},
	{
		.num_parents = 2,
		.parents = { PLL1_REFCLK, PLL0_REFCLK },
		.mux_sel = CMN_PLLLC1,
		.table = { 1, 0 },
		.node_name = "pll_cmnlc1",
	},
};

static int cdns_sierra_pll_mux_set_parent(struct clk *clk, struct clk *parent)
{
	struct udevice *dev = clk->dev;
	struct cdns_sierra_pll_mux *priv = dev_get_priv(dev);
	struct cdns_sierra_pll_mux_sel *data = dev_get_plat(dev);
	struct cdns_sierra_phy *sp = priv->sp;
	int ret;
	int i;

	for (i = 0; i < ARRAY_SIZE(priv->parent_clks); i++) {
		if (parent->dev == priv->parent_clks[i]->dev)
			break;
	}

	if (i == ARRAY_SIZE(priv->parent_clks))
		return -EINVAL;

	ret = regmap_field_write(sp->cmn_refrcv_refclk_plllc1en_preg[data[clk->id].mux_sel], i);
	ret |= regmap_field_write(sp->cmn_refrcv_refclk_termen_preg[data[clk->id].mux_sel], i);
	ret |= regmap_field_write(sp->cmn_plllc_pfdclk1_sel_preg[data[clk->id].mux_sel],
				  data[clk->id].table[i]);

	return ret;
}

static const struct clk_ops cdns_sierra_pll_mux_ops = {
	.set_parent = cdns_sierra_pll_mux_set_parent,
};

int cdns_sierra_pll_mux_probe(struct udevice *dev)
{
	struct cdns_sierra_pll_mux *priv = dev_get_priv(dev);
	struct cdns_sierra_phy *sp = dev_get_priv(dev->parent);
	struct cdns_sierra_pll_mux_sel *data = dev_get_plat(dev);
	struct clk *clk;
	int i, j;

	for (j = 0; j < SIERRA_NUM_CMN_PLLC; j++) {
		for (i = 0; i < ARRAY_SIZE(priv->parent_clks); i++) {
			clk = sp->input_clks[data[j].parents[i]];
			if (IS_ERR_OR_NULL(clk)) {
				dev_err(dev, "No parent clock for PLL mux clocks\n");
				return IS_ERR(clk) ? PTR_ERR(clk) : -ENOENT;
			}
			priv->parent_clks[i] = clk;
		}
	}

	priv->sp = dev_get_priv(dev->parent);

	return 0;
}

U_BOOT_DRIVER(cdns_sierra_pll_mux_clk) = {
	.name			= "cdns_sierra_mux_clk",
	.id			= UCLASS_CLK,
	.priv_auto		= sizeof(struct cdns_sierra_pll_mux),
	.ops			= &cdns_sierra_pll_mux_ops,
	.probe			= cdns_sierra_pll_mux_probe,
	.plat_auto		= sizeof(struct cdns_sierra_pll_mux_sel) * SIERRA_NUM_CMN_PLLC,
};

static int cdns_sierra_pll_bind_of_clocks(struct cdns_sierra_phy *sp)
{
	struct udevice *dev = sp->dev;
	struct driver *cdns_sierra_clk_drv;
	struct cdns_sierra_pll_mux_sel *data = pll_clk_mux_sel;
	int i, rc;

	cdns_sierra_clk_drv = lists_driver_lookup_name("cdns_sierra_mux_clk");
	if (!cdns_sierra_clk_drv) {
		dev_err(dev, "Can not find driver 'cdns_sierra_mux_clk'\n");
		return -ENOENT;
	}

	rc = device_bind(dev, cdns_sierra_clk_drv, "pll_mux_clk",
			 data, dev_ofnode(dev), NULL);
	if (rc) {
		dev_err(dev, "cannot bind driver for clock %s\n",
			clk_names[i]);
	}

	return 0;
}

static int cdns_sierra_get_optional(struct cdns_sierra_inst *inst,
				    ofnode child)
{
	if (ofnode_read_u32(child, "reg", &inst->mlane))
		return -EINVAL;

	if (ofnode_read_u32(child, "cdns,num-lanes", &inst->num_lanes))
		return -EINVAL;

	if (ofnode_read_u32(child, "cdns,phy-type", &inst->phy_type))
		return -EINVAL;

	return 0;
}

static struct regmap *cdns_regmap_init(struct udevice *dev, void __iomem *base,
				       u32 block_offset, u8 block_offset_shift,
				       u8 reg_offset_shift)
{
	struct cdns_sierra_phy *sp = dev_get_priv(dev);
	struct regmap_config config;

	config.r_start = (ulong)(base + (block_offset << block_offset_shift));
	config.r_size = sp->size - (block_offset << block_offset_shift);
	config.reg_offset_shift = reg_offset_shift;
	config.width = REGMAP_SIZE_16;

	return devm_regmap_init(dev, NULL, NULL, &config);
}

static int cdns_regfield_init(struct cdns_sierra_phy *sp)
{
	struct udevice *dev = sp->dev;
	struct regmap_field *field;
	struct reg_field reg_field;
	struct regmap *regmap;
	int i;

	regmap = sp->regmap_common_cdb;
	field = devm_regmap_field_alloc(dev, regmap, macro_id_type);
	if (IS_ERR(field)) {
		dev_err(dev, "MACRO_ID_TYPE reg field init failed\n");
		return PTR_ERR(field);
	}
	sp->macro_id_type = field;

	for (i = 0; i < SIERRA_NUM_CMN_PLLC; i++) {
		reg_field = cmn_plllc_pfdclk1_sel_preg[i].pfdclk_sel_preg;
		field = devm_regmap_field_alloc(dev, regmap, reg_field);
		if (IS_ERR(field)) {
			dev_err(dev, "PLLLC%d_PFDCLK1_SEL failed\n", i);
			return PTR_ERR(field);
		}
		sp->cmn_plllc_pfdclk1_sel_preg[i] = field;

		reg_field = cmn_plllc_pfdclk1_sel_preg[i].plllc1en_field;
		field = devm_regmap_field_alloc(dev, regmap, reg_field);
		if (IS_ERR(field)) {
			dev_err(dev, "REFRCV%d_REFCLK_PLLLC1EN failed\n", i);
			return PTR_ERR(field);
		}
		sp->cmn_refrcv_refclk_plllc1en_preg[i] = field;

		reg_field = cmn_plllc_pfdclk1_sel_preg[i].termen_field;
		field = devm_regmap_field_alloc(dev, regmap, reg_field);
		if (IS_ERR(field)) {
			dev_err(dev, "REFRCV%d_REFCLK_TERMEN failed\n", i);
			return PTR_ERR(field);
		}
		sp->cmn_refrcv_refclk_termen_preg[i] = field;
	}

	regmap = sp->regmap_phy_config_ctrl;
	field = devm_regmap_field_alloc(dev, regmap, phy_pll_cfg_1);
	if (IS_ERR(field)) {
		dev_err(dev, "PHY_PLL_CFG_1 reg field init failed\n");
		return PTR_ERR(field);
	}
	sp->phy_pll_cfg_1 = field;

	for (i = 0; i < SIERRA_MAX_LANES; i++) {
		regmap = sp->regmap_lane_cdb[i];
		field = devm_regmap_field_alloc(dev, regmap, pllctrl_lock);
		if (IS_ERR(field)) {
			dev_err(dev, "P%d_ENABLE reg field init failed\n", i);
			return PTR_ERR(field);
		}
		sp->pllctrl_lock[i] =  field;
	}

	return 0;
}

static int cdns_regmap_init_blocks(struct cdns_sierra_phy *sp,
				   void __iomem *base, u8 block_offset_shift,
				   u8 reg_offset_shift)
{
	struct udevice *dev = sp->dev;
	struct regmap *regmap;
	u32 block_offset;
	int i;

	for (i = 0; i < SIERRA_MAX_LANES; i++) {
		block_offset = SIERRA_LANE_CDB_OFFSET(i, reg_offset_shift);
		regmap = cdns_regmap_init(dev, base, block_offset,
					  block_offset_shift, reg_offset_shift);
		if (IS_ERR(regmap)) {
			dev_err(dev, "Failed to init lane CDB regmap\n");
			return PTR_ERR(regmap);
		}
		sp->regmap_lane_cdb[i] = regmap;
	}

	regmap = cdns_regmap_init(dev, base, SIERRA_COMMON_CDB_OFFSET,
				  block_offset_shift, reg_offset_shift);
	if (IS_ERR(regmap)) {
		dev_err(dev, "Failed to init common CDB regmap\n");
		return PTR_ERR(regmap);
	}
	sp->regmap_common_cdb = regmap;

	regmap = cdns_regmap_init(dev, base, SIERRA_PHY_CONFIG_CTRL_OFFSET,
				  block_offset_shift, reg_offset_shift);
	if (IS_ERR(regmap)) {
		dev_err(dev, "Failed to init PHY config and control regmap\n");
		return PTR_ERR(regmap);
	}
	sp->regmap_phy_config_ctrl = regmap;

	return 0;
}

static int cdns_sierra_phy_get_clocks(struct cdns_sierra_phy *sp,
				      struct udevice *dev)
{
	struct clk *clk;
	int ret;

	clk = devm_clk_get_optional(dev, "phy_clk");
	if (IS_ERR(clk)) {
		dev_err(dev, "failed to get clock phy_clk\n");
		return PTR_ERR(clk);
	}
	sp->input_clks[PHY_CLK] = clk;

	clk = devm_clk_get_optional(dev, "cmn_refclk_dig_div");
	if (IS_ERR(clk)) {
		dev_err(dev, "cmn_refclk_dig_div clock not found\n");
		ret = PTR_ERR(clk);
		return ret;
	}
	sp->input_clks[CMN_REFCLK_DIG_DIV] = clk;

	clk = devm_clk_get_optional(dev, "cmn_refclk1_dig_div");
	if (IS_ERR(clk)) {
		dev_err(dev, "cmn_refclk1_dig_div clock not found\n");
		ret = PTR_ERR(clk);
		return ret;
	}
	sp->input_clks[CMN_REFCLK1_DIG_DIV] = clk;

	clk = devm_clk_get_optional(dev, "pll0_refclk");
	if (IS_ERR(clk)) {
		dev_err(dev, "pll0_refclk clock not found\n");
		ret = PTR_ERR(clk);
		return ret;
	}
	sp->input_clks[PLL0_REFCLK] = clk;

	clk = devm_clk_get_optional(dev, "pll1_refclk");
	if (IS_ERR(clk)) {
		dev_err(dev, "pll1_refclk clock not found\n");
		ret = PTR_ERR(clk);
		return ret;
	}
	sp->input_clks[PLL1_REFCLK] = clk;

	return 0;
}

static int cdns_sierra_phy_get_resets(struct cdns_sierra_phy *sp,
				      struct udevice *dev)
{
	struct reset_control *rst;

	rst = devm_reset_control_get(dev, "sierra_reset");
	if (IS_ERR(rst)) {
		dev_err(dev, "failed to get reset\n");
		return PTR_ERR(rst);
	}
	sp->phy_rst = rst;

	return 0;
}

static int cdns_sierra_bind_link_nodes(struct  cdns_sierra_phy *sp)
{
	struct udevice *dev = sp->dev;
	struct driver *link_drv;
	ofnode child;
	int rc;

	link_drv = lists_driver_lookup_name("sierra_phy_link");
	if (!link_drv) {
		dev_err(dev, "Cannot find driver 'sierra_phy_link'\n");
		return -ENOENT;
	}

	ofnode_for_each_subnode(child, dev_ofnode(dev)) {
		if (!(ofnode_name_eq(child, "phy") ||
		      ofnode_name_eq(child, "link")))
			continue;

		rc = device_bind(dev, link_drv, "link", NULL, child, NULL);
		if (rc) {
			dev_err(dev, "cannot bind driver for link\n");
			return rc;
		}
	}

	return 0;
}

static int cdns_sierra_link_probe(struct udevice *dev)
{
	struct cdns_sierra_inst *inst = dev_get_priv(dev);
	struct cdns_sierra_phy *sp = dev_get_priv(dev->parent);
	struct reset_ctl_bulk *rst;
	int ret, node;

	rst = devm_reset_bulk_get_by_node(dev, dev_ofnode(dev));
	if (IS_ERR(rst)) {
		ret = PTR_ERR(rst);
		dev_err(dev, "failed to get reset\n");
		return ret;
	}
	inst->lnk_rst = rst;

	ret = cdns_sierra_get_optional(inst, dev_ofnode(dev));
	if (ret) {
		dev_err(dev, "missing property in node\n");
		return ret;
	}
	node = sp->nsubnodes;
	sp->phys[node] = inst;
	sp->nsubnodes += 1;
	sp->num_lanes += inst->num_lanes;

	/* If more than one subnode, configure the PHY as multilink */
	if (!sp->autoconf && sp->nsubnodes > 1)
		regmap_field_write(sp->phy_pll_cfg_1, 0x1);

	return 0;
}

U_BOOT_DRIVER(sierra_phy_link) = {
	.name		= "sierra_phy_link",
	.id		= UCLASS_PHY,
	.probe		= cdns_sierra_link_probe,
	.priv_auto	= sizeof(struct cdns_sierra_inst),
};

static int cdns_sierra_phy_probe(struct udevice *dev)
{
	struct cdns_sierra_phy *sp = dev_get_priv(dev);
	struct cdns_sierra_data *data;
	unsigned int id_value;
	int ret;

	sp->dev = dev;

	sp->base =  devfdt_remap_addr_index(dev, 0);
	if (!sp->base) {
		dev_err(dev, "unable to map regs\n");
		return -ENOMEM;
	}
	devfdt_get_addr_size_index(dev, 0, (fdt_size_t *)&sp->size);

	/* Get init data for this PHY */
	data = (struct cdns_sierra_data *)dev_get_driver_data(dev);
	sp->init_data = data;

	ret = cdns_regmap_init_blocks(sp, sp->base, data->block_offset_shift,
				      data->reg_offset_shift);
	if (ret)
		return ret;

	ret = cdns_regfield_init(sp);
	if (ret)
		return ret;

	ret = cdns_sierra_phy_get_clocks(sp, dev);
	if (ret)
		return ret;

	ret = cdns_sierra_pll_bind_of_clocks(sp);
	if (ret)
		return ret;

	ret = cdns_sierra_phy_get_resets(sp, dev);
	if (ret)
		return ret;

	ret = clk_prepare_enable(sp->input_clks[PHY_CLK]);
	if (ret)
		return ret;

	/* Check that PHY is present */
	regmap_field_read(sp->macro_id_type, &id_value);
	if  (sp->init_data->id_value != id_value) {
		dev_err(dev, "PHY not found 0x%x vs 0x%x\n",
			sp->init_data->id_value, id_value);
		ret = -EINVAL;
		goto clk_disable;
	}

	sp->autoconf = dev_read_bool(dev, "cdns,autoconf");
	/* Binding link nodes as children to serdes */
	ret = cdns_sierra_bind_link_nodes(sp);
	if (ret)
		goto clk_disable;

	dev_info(dev, "sierra probed\n");
	return 0;

clk_disable:
	clk_disable_unprepare(sp->input_clks[PHY_CLK]);
	return ret;
}

static int cdns_sierra_phy_remove(struct udevice *dev)
{
	struct cdns_sierra_phy *phy = dev_get_priv(dev);
	int i;

	reset_control_assert(phy->phy_rst);

	/*
	 * The device level resets will be put automatically.
	 * Need to put the subnode resets here though.
	 */
	for (i = 0; i < phy->nsubnodes; i++)
		reset_assert_bulk(phy->phys[i]->lnk_rst);

	clk_disable_unprepare(phy->input_clks[PHY_CLK]);

	return 0;
}

/* refclk100MHz_32b_PCIe_cmn_pll_ext_ssc */
static struct cdns_reg_pairs cdns_pcie_cmn_regs_ext_ssc[] = {
	{0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG},
	{0x2106, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG},
	{0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE1_PREG},
	{0x8A06, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG},
	{0x1B1B, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG}
};

/* refclk100MHz_32b_PCIe_ln_ext_ssc */
static struct cdns_reg_pairs cdns_pcie_ln_regs_ext_ssc[] = {
	{0x813E, SIERRA_CLKPATHCTRL_TMR_PREG},
	{0x8047, SIERRA_RX_CREQ_FLTR_A_MODE3_PREG},
	{0x808F, SIERRA_RX_CREQ_FLTR_A_MODE2_PREG},
	{0x808F, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
	{0x808F, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
	{0x033C, SIERRA_RX_CTLE_MAINTENANCE_PREG},
	{0x44CC, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG}
};

/* refclk100MHz_20b_USB_cmn_pll_ext_ssc */
static struct cdns_reg_pairs cdns_usb_cmn_regs_ext_ssc[] = {
	{0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE1_PREG},
	{0x2085, SIERRA_CMN_PLLLC_LF_COEFF_MODE0_PREG},
	{0x0000, SIERRA_CMN_PLLLC_BWCAL_MODE0_PREG},
	{0x0000, SIERRA_CMN_PLLLC_SS_TIME_STEPSIZE_MODE_PREG}
};

/* refclk100MHz_20b_USB_ln_ext_ssc */
static struct cdns_reg_pairs cdns_usb_ln_regs_ext_ssc[] = {
	{0xFE0A, SIERRA_DET_STANDEC_A_PREG},
	{0x000F, SIERRA_DET_STANDEC_B_PREG},
	{0x55A5, SIERRA_DET_STANDEC_C_PREG},
	{0x69ad, SIERRA_DET_STANDEC_D_PREG},
	{0x0241, SIERRA_DET_STANDEC_E_PREG},
	{0x0110, SIERRA_PSM_LANECAL_DLY_A1_RESETS_PREG},
	{0x0014, SIERRA_PSM_A0IN_TMR_PREG},
	{0xCF00, SIERRA_PSM_DIAG_PREG},
	{0x001F, SIERRA_PSC_TX_A0_PREG},
	{0x0007, SIERRA_PSC_TX_A1_PREG},
	{0x0003, SIERRA_PSC_TX_A2_PREG},
	{0x0003, SIERRA_PSC_TX_A3_PREG},
	{0x0FFF, SIERRA_PSC_RX_A0_PREG},
	{0x0003, SIERRA_PSC_RX_A1_PREG},
	{0x0003, SIERRA_PSC_RX_A2_PREG},
	{0x0001, SIERRA_PSC_RX_A3_PREG},
	{0x0001, SIERRA_PLLCTRL_SUBRATE_PREG},
	{0x0406, SIERRA_PLLCTRL_GEN_D_PREG},
	{0x5233, SIERRA_PLLCTRL_CPGAIN_MODE_PREG},
	{0x00CA, SIERRA_CLKPATH_BIASTRIM_PREG},
	{0x2512, SIERRA_DFE_BIASTRIM_PREG},
	{0x0000, SIERRA_DRVCTRL_ATTEN_PREG},
	{0x823E, SIERRA_CLKPATHCTRL_TMR_PREG},
	{0x078F, SIERRA_RX_CREQ_FLTR_A_MODE1_PREG},
	{0x078F, SIERRA_RX_CREQ_FLTR_A_MODE0_PREG},
	{0x7B3C, SIERRA_CREQ_CCLKDET_MODE01_PREG},
	{0x023C, SIERRA_RX_CTLE_MAINTENANCE_PREG},
	{0x3232, SIERRA_CREQ_FSMCLK_SEL_PREG},
	{0x0000, SIERRA_CREQ_EQ_CTRL_PREG},
	{0x0000, SIERRA_CREQ_SPARE_PREG},
	{0xCC44, SIERRA_CREQ_EQ_OPEN_EYE_THRESH_PREG},
	{0x8452, SIERRA_CTLELUT_CTRL_PREG},
	{0x4121, SIERRA_DFE_ECMP_RATESEL_PREG},
	{0x4121, SIERRA_DFE_SMP_RATESEL_PREG},
	{0x0003, SIERRA_DEQ_PHALIGN_CTRL},
	{0x3200, SIERRA_DEQ_CONCUR_CTRL1_PREG},
	{0x5064, SIERRA_DEQ_CONCUR_CTRL2_PREG},
	{0x0030, SIERRA_DEQ_EPIPWR_CTRL2_PREG},
	{0x0048, SIERRA_DEQ_FAST_MAINT_CYCLES_PREG},
	{0x5A5A, SIERRA_DEQ_ERRCMP_CTRL_PREG},
	{0x02F5, SIERRA_DEQ_OFFSET_CTRL_PREG},
	{0x02F5, SIERRA_DEQ_GAIN_CTRL_PREG},
	{0x9999, SIERRA_DEQ_VGATUNE_CTRL_PREG},
	{0x0014, SIERRA_DEQ_GLUT0},
	{0x0014, SIERRA_DEQ_GLUT1},
	{0x0014, SIERRA_DEQ_GLUT2},
	{0x0014, SIERRA_DEQ_GLUT3},
	{0x0014, SIERRA_DEQ_GLUT4},
	{0x0014, SIERRA_DEQ_GLUT5},
	{0x0014, SIERRA_DEQ_GLUT6},
	{0x0014, SIERRA_DEQ_GLUT7},
	{0x0014, SIERRA_DEQ_GLUT8},
	{0x0014, SIERRA_DEQ_GLUT9},
	{0x0014, SIERRA_DEQ_GLUT10},
	{0x0014, SIERRA_DEQ_GLUT11},
	{0x0014, SIERRA_DEQ_GLUT12},
	{0x0014, SIERRA_DEQ_GLUT13},
	{0x0014, SIERRA_DEQ_GLUT14},
	{0x0014, SIERRA_DEQ_GLUT15},
	{0x0014, SIERRA_DEQ_GLUT16},
	{0x0BAE, SIERRA_DEQ_ALUT0},
	{0x0AEB, SIERRA_DEQ_ALUT1},
	{0x0A28, SIERRA_DEQ_ALUT2},
	{0x0965, SIERRA_DEQ_ALUT3},
	{0x08A2, SIERRA_DEQ_ALUT4},
	{0x07DF, SIERRA_DEQ_ALUT5},
	{0x071C, SIERRA_DEQ_ALUT6},
	{0x0659, SIERRA_DEQ_ALUT7},
	{0x0596, SIERRA_DEQ_ALUT8},
	{0x0514, SIERRA_DEQ_ALUT9},
	{0x0492, SIERRA_DEQ_ALUT10},
	{0x0410, SIERRA_DEQ_ALUT11},
	{0x038E, SIERRA_DEQ_ALUT12},
	{0x030C, SIERRA_DEQ_ALUT13},
	{0x03F4, SIERRA_DEQ_DFETAP_CTRL_PREG},
	{0x0001, SIERRA_DFE_EN_1010_IGNORE_PREG},
	{0x3C01, SIERRA_DEQ_TAU_CTRL1_FAST_MAINT_PREG},
	{0x3C40, SIERRA_DEQ_TAU_CTRL1_SLOW_MAINT_PREG},
	{0x1C08, SIERRA_DEQ_TAU_CTRL2_PREG},
	{0x0033, SIERRA_DEQ_PICTRL_PREG},
	{0x0400, SIERRA_CPICAL_TMRVAL_MODE1_PREG},
	{0x0330, SIERRA_CPICAL_TMRVAL_MODE0_PREG},
	{0x01FF, SIERRA_CPICAL_PICNT_MODE1_PREG},
	{0x0009, SIERRA_CPI_OUTBUF_RATESEL_PREG},
	{0x3232, SIERRA_CPICAL_RES_STARTCODE_MODE23_PREG},
	{0x0005, SIERRA_LFPSDET_SUPPORT_PREG},
	{0x000F, SIERRA_LFPSFILT_NS_PREG},
	{0x0009, SIERRA_LFPSFILT_RD_PREG},
	{0x0001, SIERRA_LFPSFILT_MP_PREG},
	{0x6013, SIERRA_SIGDET_SUPPORT_PREG},
	{0x8013, SIERRA_SDFILT_H2L_A_PREG},
	{0x8009, SIERRA_SDFILT_L2H_PREG},
	{0x0024, SIERRA_RXBUFFER_CTLECTRL_PREG},
	{0x0020, SIERRA_RXBUFFER_RCDFECTRL_PREG},
	{0x4243, SIERRA_RXBUFFER_DFECTRL_PREG}
};

static const struct cdns_sierra_data cdns_map_sierra = {
	SIERRA_MACRO_ID,
	0x2,
	0x2,
	ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc),
	ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc),
	ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc),
	ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc),
	cdns_pcie_cmn_regs_ext_ssc,
	cdns_pcie_ln_regs_ext_ssc,
	cdns_usb_cmn_regs_ext_ssc,
	cdns_usb_ln_regs_ext_ssc,
};

static const struct cdns_sierra_data cdns_ti_map_sierra = {
	SIERRA_MACRO_ID,
	0x0,
	0x1,
	ARRAY_SIZE(cdns_pcie_cmn_regs_ext_ssc),
	ARRAY_SIZE(cdns_pcie_ln_regs_ext_ssc),
	ARRAY_SIZE(cdns_usb_cmn_regs_ext_ssc),
	ARRAY_SIZE(cdns_usb_ln_regs_ext_ssc),
	cdns_pcie_cmn_regs_ext_ssc,
	cdns_pcie_ln_regs_ext_ssc,
	cdns_usb_cmn_regs_ext_ssc,
	cdns_usb_ln_regs_ext_ssc,
};

static const struct udevice_id cdns_sierra_id_table[] = {
	{
		.compatible = "cdns,sierra-phy-t0",
		.data = (ulong)&cdns_map_sierra,
	},
	{
		.compatible = "ti,sierra-phy-t0",
		.data = (ulong)&cdns_ti_map_sierra,
	},
	{}
};

U_BOOT_DRIVER(sierra_phy_provider) = {
	.name		= "cdns,sierra",
	.id		= UCLASS_PHY,
	.of_match	= cdns_sierra_id_table,
	.probe		= cdns_sierra_phy_probe,
	.remove		= cdns_sierra_phy_remove,
	.ops		= &ops,
	.priv_auto	= sizeof(struct cdns_sierra_phy),
};